نتایج جستجو برای: sertoli cell
تعداد نتایج: 1685140 فیلتر نتایج به سال:
background: sertoli cells play a pivotal role in creating microenvironments essential for spermatogonial stem cells (sscs) self-renewal and commitment to differentiation. maintenance of sscs and or induction of in vitro spermiogenesis may provide a therapeutic strategy to treat male infertility. objective: this study investigated the role of luekemia inhibitory factor (lif) on the propagation o...
objective: this study presents a simple method for isolation, expansion and purification of neonatal mouse spermatogonial stem cells. methods: we used enzymatic digestion to isolate a cell suspension of spermatogonia and sertoli cells from neonatal 2-day-old mice. the cells were cultured in dmem/f12 that contained 10% serum for two weeks. sertoli and spermatogonia cell characteristics were conf...
To date, only I I cases of sclerosing Sertoli cell tumors have been reported in the literature, representing a distinctive subtype of Sertoli cell tumor in humans. We present a 12th case with a review of the current urological and pathological literature.
Objective(s): Sertoli cells support in vivo germ cell production; but, its exact mechanism has not been well understood. The present study was designed to analyze the effect of Sertoli cells in differentiation of mouse embryonic stem cells (mESCs) to germ cells. Materials and Methods: A fusion construct composed of a Stra8 gene promoter and the coding region of enhanced green fluorescence p...
Background Sertoli cells located in seminiferous tubular basement membrane and surrounds different types of germ cell and they were only somatic cell type that directly contacts germ cells. These cells have Several role like support activities, nutrition of germ cells.During spermatogenesis, expression of SOX3 is necessary for differentiation of spermatogonia A. SOX3 is a transcription factor, ...
Sertoli cells were cultured alone or with germ cells to evaluate the effect of the association with germ cells on the secretory activity of Sertoli cells. Secretion of androgen-binding protein, which is specifically secreted by Sertoli cells, was measured under several experimental conditions. The following experimental models were utilized: 1) cultures of explants of seminiferous epithelium fr...
A Sertoli-spermatid coculture model is described in which a large percentage (greater than 76%) of round spermatids remain viable for 48 h and bind to Sertoli cells. The effects of follicle-stimulating hormone (FSH) and testosterone on spermatid binding (expressed as the spermatid density; SD = the number of spermatids per unit area of Sertoli cell cytoplasm), ultrastructure of the Sertoli-sper...
The positive relationship between Sertoli cell number and testicular size emphasizes the importance of determining factors involved in the regulation of the Sertoli cell population. Based on data from other species and indirect evidence in the boar, it is generally accepted that porcine Sertoli cells proliferate rapidly throughout the early postnatal period. However, direct evaluation of Sertol...
Sertoli cells undergo a maturation process during post-natal testicular development that leads to the adult-type Sertoli cell, which is required for spermatogenesis. Understanding Sertoli cell maturation is therefore necessary to gain insight into the underlying causes of impaired spermatogenesis and male infertility. The present study characterized the cellular and molecular differentiation of...
Sertoli cell tumours are very rare testicular tumours accounting for 0.4-1.5% of all testicular neoplasms. In the current report, we present a case of sclerosing Sertoli cell tumour. The histology and clinical features were compared to those of other Sertoli cell tumour subtypes in order to assess if the different subtypes really represent distinct clinical and prognostic entities. The current ...
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